salvatore cordileone's installation will take place at 2:00 at st. mary's theat. 2,000 people are expected to show up including the vatican's ambassador to the u.s. this also includes protestors who will be here an hour before the mass. the former oakland bishop was a key driving force behind prop 8. now this favored him with fellow catholics. still some parishioners say he will be welcomed in san francisco. >> hopefully, by attending mass here, he will see how important this church is and what it does. there are a lot of elements of the catholic church which unfortunately hold that position and a place like this kind of challenges that on its own level. >> reporter: cordileone was oakland bishop for the past three years making headlines when he was arrested in san diego last month. he was charged with drunk driving and later apologized. now, if you can't catch today's installation, we'll be streaming it live on our website at cbssf.com. live in san francisco, cate caugiran, cbs 5. >> thank you. >>> this afternoon, the blue angels will begin practici